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OKAI ES-400 Battery Connector

Posted: Mon Jul 20, 2020 3:16 pm
by Marcel_HAX
Hi, I have a few ES-400 Batteries wich I want to use. But the problem is, that I dont know how to connect them because they need a unlock voltage to a pin. But I cant find any documentation on this connector.

Re: OKAI ES-400 Battery Connector

Posted: Wed Jul 29, 2020 11:00 pm
by alpha-b
hello you have to open the battery and make a shunt between two mosfets

Re: OKAI ES-400 Battery Connector

Posted: Mon Aug 10, 2020 10:44 am
by Marcel_HAX
Thanks! Do you have any tips on how to get this grey fill material out of there?

Re: OKAI ES-400 Battery Connector

Posted: Thu Aug 27, 2020 2:54 pm
by tempmail
Thanks! Do you have any tips on how to get this grey fill material out of there?
Hi!
I recovered a battery of ES-400 as well. I also found out how to activate the output, or how to charge it.

So far I just charged the battery with a 54.6V power supply and everything went well. Here's what I now know about this connector:
Image

I now want to try to communicate with the BMS, but I don't have any info to do so. Would you have been able to remove this green paste? If yes, you would have info about the BMS ;) ?

I briefly tried to take the battery out of its hull but without success.

EDIT : Power is cutting of after few seconds when I push more than 20-40 watts. On the screen we can see "error 31"

Re: OKAI ES-400 Battery Connector

Posted: Tue Jul 27, 2021 1:32 pm
by jfaofezahj
Up !
Does anyone have experience on using ES400 battery without its controller ?

Re: OKAI ES-400 Battery Connector

Posted: Wed Mar 13, 2024 9:06 am
by xebeche